Recombinant inbred line differential identifies race-specific resistance to phytophthora root rot in Capsicum annuum.
A differential series is the normal method for identification of races within a plant pathogen and a host interaction. A host differential is extremely useful for phytopathological as well as breeding purposes. A set of recombinant inbred lines (RILs) were developed and characterized for race differentiation of Phytophthora root rot caused by Phytophthora capsici. The highly resistant Capsicum annuum accession Criollo de Morelos-334 was hybridized to a susceptible cultivar, Early Jalapeno, to generate the RIL population. The host differential characterized 17 isolates of P. capsici into 13 races. The establishment of a stable host differential for the P. capsici and C. annuum interaction will assist researchers in understanding the complex inheritance of resistance to Phytophthora root rot and to develop resistant cultivars.
Sy
O
O
Department of Plant and Environment Sciences, New Mexico State University, Las Cruces, NM 88003, USA.
Steiner
R
R
Bosland
P W
PW
D002212:Capsicum / Q000235:genetics* / Q000382:microbiology*; D020022:Genetic Predisposition to Disease; D054884:Host-Pathogen Interactions / Q000235:genetics; D007178:Inbreeding; D010838:Phytophthora / Q000502:physiology*; D010935:Plant Diseases / Q000235:genetics*; D018517:Plant Roots / Q000235:genetics / Q000382:microbiology